Elexhere

This Printed Zipper Repair Requires No Unsewing | Hackadayhttps://hackaday.com/2026/03/14/this-printed-zipper-repair-requires-no-unsewing/

If a zipper breaks, a 3D printer might not be the first tool one reaches for — but it’s more feasible than one might think. [MisterJ]’s zipper slider replacement is the kind of 3D…

3D Printing A Harmonic Pin-Ring Gearing Drive | Hackadayhttps://hackaday.com/2026/03/11/3d-printing-a-harmonic-pin-ring-gearing-drive/

3dprint

Cycloidal drives are a type of speed reducer that are significantly more compact than gearboxes, but they still come with a fair number of components. In comparison, the harmonic pin-ring drive tha…

A Rotary Dial The 3D Printed Way | Hackadayhttps://hackaday.com/2026/03/11/a-rotary-dial-the-3d-printed-way/

3dprint
Dual

There’s a meme which may have a basis in truth, of a teenager left clueless when presented with a rotary telephone. The dial, in reality a mechanical pulse chain generator, was once ubiquitou…

Boom Boy Is the Answer to “What If Nintendo Made a Boombox?” - Hackster.iohttps://www.hackster.io/news/boom-boy-is-the-answer-to-what-if-nintendo-made-a-boombox-0f8f3f95e70d

Music

What if Nintendo had made boomboxes instead of consoles? It might have looked something like this Boom Boy.

The Ultimate Productivity Killer: Doom Arrives on the Office Desk Phone - Hackster.iohttps://www.hackster.io/news/the-ultimate-productivity-killer-doom-arrives-on-the-office-desk-phone-4b95e50a577b

Doom
phone

From corporate calls to Cacodemons: a hardware hacker turned a 20-year-old VoIP office phone into a playable Doom machine.

GitHub - shufps/diy-projector-clock: DIY Projector Clockhttps://github.com/shufps/diy-projector-clock

DIY Projector Clock. Contribute to shufps/diy-projector-clock development by creating an account on GitHub.

A Projection Clock You Can Actually See During the Day - Hackster.iohttps://www.hackster.io/news/a-projection-clock-you-can-actually-see-during-the-day-93367d0570cf

Frixos is a high-power ESP32 projection clock that stays crystal clear in daylight and syncs with Home Assistant to track your entire life.

The Long Afterlife Of The Console Modchip | Hackadayhttps://hackaday.com/2026/03/01/the-long-afterlife-of-the-console-modchip/

For a late-1990s engineer with good soldering skills, many a free pint of beer could be earned by installing modchips on the game consoles of the day. Modchips were usually a small microcontroller …

Easily Replaceable USB-C Port Spawned By EU Laws | Hackadayhttps://hackaday.com/2026/02/26/easily-replaceable-usb-c-port-spawned-by-eu-laws/

Usb-c

The USB-C port has become a defacto connectivity standard for modern devices, largely supplanting the ugly mess of barrel jacks and micro USB connectors that once cursed us. While their reliability…

Stop Ironing 3D Prints | Hackadayhttps://hackaday.com/2026/02/25/stop-ironing-3d-prints/

3dprint

If you want smooth top surfaces on your 3D printed parts, a common technique is to turn on ironing in your slicer. This causes the head to drag through the top of the part, emitting a small amount …

Bringing Flip-Dot Displays Into the 21st Century - Hackster.iohttps://www.hackster.io/news/bringing-flip-dot-displays-into-the-21st-century-4cbc186d6f35

Display

Unlock the magic of vintage flip-dot displays with this modern hardware hack that brings retro mechanical pixels back to life.

X-Ray A PCB Virtually | Hackadayhttps://hackaday.com/2026/02/23/x-ray-a-pcb-virtually/

Pcb
Reverse

If you want to reverse engineer a PC board, you could do worse than X-ray it. But thanks to [Philip Giacalone], you could just take a photo, load it into PCB Tracer, and annotate the images. You c…

sylverb/game-and-watch-retro-go-sdhttps://github.com/sylverb/game-and-watch-retro-go-sd?tab=readme-ov-file#pre-modded-options

Contribute to sylverb/game-and-watch-retro-go-sd development by creating an account on GitHub.

Scanning Table For The Professional Maker | Hackadayhttps://hackaday.com/2026/02/10/scanning-table-for-the-professional-maker/

Sometimes the simplest objects need some overthinking. This is exactly what [Chris Borge] realized when using his 3D scanner and finding that the included rotation table left quite a bit to be desi…

A DIY Retro-Modern Alarm Clock for Under $10 - Hackster.iohttps://www.hackster.io/news/a-diy-retro-modern-alarm-clock-for-under-10-4e4e972345d8

Build your own ESPclock with a Wemos D1 mini and a 3D-printed case for a customizable, budget-friendly DIY alarm clock.

A CNC Dock for the Etch A Sketch - Hackster.iohttps://www.hackster.io/news/a-cnc-dock-for-the-etch-a-sketch-e4f8bf24581e

Game

Engineer Nikodem Bartnik built the "CNC A Sketch," a robotic dock using a Raspberry Pi Pico to turn images into perfect Etch A Sketch art.

The Quickest and Easiest Way to Make Neat 3D Puzzles - Hackster.iohttps://www.hackster.io/news/the-quickest-and-easiest-way-to-make-neat-3d-puzzles-6fbd48edc8ce

Lego
Laser

Instructables user the_real_harvey came up with a very quick and easy method for making 3D puzzles.

Using 3D Printing And Copper Tape To Make PCBs | Hackadayhttps://hackaday.com/2026/01/28/using-3d-printing-and-copper-tape-to-make-pcbs/

In a recent video [QWZ Labs] demonstrates an interesting technique to use 3D printing to make creating custom PCBs rather straightforward even if all you have is a 3D printer and a roll of copper t…

The Arduino UNO, Now in Extra-Large - Hackster.iohttps://www.hackster.io/news/the-arduino-uno-now-in-extra-large-7a15236d9e8a

Arduino
Big

UncleStem just built a massive, fully functional Arduino UNO that is scaled up seven times its original size.

One-Dimensional Space Invaders Looks Surprisingly Fun - Hackster.iohttps://www.hackster.io/news/one-dimensional-space-invaders-looks-surprisingly-fun-a2f1711c9ab7

Led
Game

This 1D RGB Invaders game actually seems like more fun than regular old Space Invaders.